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Journal articles on the topic 'Height-lateral law'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Zhao, Yong Tao, and Yun An Hu. "Design of the Scheme Flight Trajectory Command for the Tactical Missile." Key Engineering Materials 480-481 (June 2011): 1426–31. http://dx.doi.org/10.4028/www.scientific.net/kem.480-481.1426.

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For the case of the scheme trajectory command design for the tactical missile, the longitudinal and lateral commands and the compound controller of the attitude and height were designed. In the launch segment, four kinds of heading angle commands were presented adopting the arc method and reduction law. In the variable height flight segment, two kinds of height commands were gained by using the parabolic and exponential function. Considering the earth curvature, the formula of the great circle course and distance was gotten applying spherical triangle solution method, and the flight command al

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2

Chen, Chao, and Jiali Tan. "Path Following for UAV using Nonlinear Model Predictive Control." Journal of Physics: Conference Series 2530, no. 1 (2023): 012021. http://dx.doi.org/10.1088/1742-6596/2530/1/012021.

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Abstract For the fixed-wing UAV control system, the lateral path-following system is an important part, which ensures that the UAV flies stably in accordance with the predetermined route within a certain height. For the lateral path following of UAV based on nonlinear model predictive control, the model of the lateral kinematics of the fixed-wing UAV is established first, and then the path-following problem of UAV at a constant height is considered. The objective function with constraints based on the NMPC is established, and finally the nonlinear optimization algorithm is used to minimize the

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3

Zheng, Guo Dong, and Huan Zhang. "Research on Gradient Law of Beam Height in Long-Span Continuous Rigid Frame Bridge." Advanced Materials Research 446-449 (January 2012): 1059–62. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.1059.

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Combined the design of a long-span continuous rigid frame bridge of a highway in Pearl River Delta of China and based on the longitudinal and lateral force characteristics of the large span, wide margin and wide box structure, the appropriate principles and methods to determine the index of the parabolic line is raised through analyzing and comparing the impact of the gradient law of the parabolic beam height of different index on structural forces.

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4

Purusatama, Byantara Darsan, Suk Woo Kim, and Nam Hun Kim. "A comparative study on quantitative anatomical characteristics of compression, lateral, and opposite woods in Agathis loranthifolia and Pinus merkusii." BioResources 19, no. 1 (2023): 925–43. http://dx.doi.org/10.15376/biores.19.1.925-943.

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Quantitative anatomical characteristics and their radial variation in compression (COW), lateral (LAW), and opposite (OPW) woods of Agathis loranthifolia and Pinus merkusii stem woods growing in Indonesia were observed and compared to understand wood quality. The length, diameter, wall thickness, and lumen diameter of tracheids and ray height and numbers were observed using optical microscopy. In both species, COW had the shortest tracheid length, smallest tracheid and lumen diameter, thickest cell wall, and highest ray numbers among the parts, while LAW and OPW showed comparable or variable v

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Qin, Wei, and Jialin Xu. "Horizontal Subzone Characteristics and Methane Seepage Properties of the Gas Flowing Fracture Zone above the Gob." Advances in Civil Engineering 2018 (August 1, 2018): 1–12. http://dx.doi.org/10.1155/2018/9071578.

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Gas flowing fracture zone (GFFZ) is an active zone in the gob where pressure-relieved methane can move freely. However, there are very few research findings on the horizontal development characteristics and internal methane seepage properties of GFFZs. In this paper, based on the development height of a GFFZ above the gob, the GFFZ was horizontally divided into the following: a lateral fracture subzone, an O-ring fracture subzone, and a compacted subzone. The identification criteria for all of these horizontal subzones were given by analyzing the influence of the stress in the coal rock mass o

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Zhang, Libo, Wenlong Shen, Xuelong Li, et al. "Abutment Pressure Distribution Law and Support Analysis of Super Large Mining Height Face." International Journal of Environmental Research and Public Health 20, no. 1 (2022): 227. http://dx.doi.org/10.3390/ijerph20010227.

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Under the condition of the shallow coal seam, the laws of roof activity after large mining height longwall face mining and prevention measures for large-area roof weighting are problems that need to be solved urgently. In the background of the super large mining height working face in the upper 108 working face of Jinjitan Coal Mine 12-2, the spatial distribution characteristics of the development and change of the mining-induced abutment pressure and the related support design in the 8.2 m super large mining height and fully mechanized mining face were conducted. It reveals the distribution c

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Hu, Jie, Shucai Li, Shaoshuai Shi, et al. "Experimental Study on Parameters Affecting the Runout Range of Rockfall." Advances in Civil Engineering 2018 (2018): 1–9. http://dx.doi.org/10.1155/2018/4739092.

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This paper presents the law of rockfall runout range and the effect on lateral dispersion caused by different parameters. A creative combined model test bench was developed as the test site, the slope, and blocks were artificial using similar materials that can meet the strength required in the experiment. As to the analysis of rockfall runout range, a series of experiments were carried out, and the shape, weight, and release heights of blocks were varied to clarify the effect of 3 factors. The motion trajectory of block was recorded based on a high-speed camera and a defined coordinate system

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Li, Xiao Jing, Wei Shen Zhu, and Wei Min Yang. "One Method of System Analysis Based on Some Parameters in the Underground Chambers and Application." Key Engineering Materials 353-358 (September 2007): 2517–20. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.2517.

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Based on the underground structure scheme of Langyashan hydro-electrical project, lots of elastic-plastic numerical analysis were conducted considering modulus of deformation, layout depth of underground opening, height of main factory premises, coefficient of lateral compressive stress, as the mainly mechanical parameters that influenced the stability analysis of underground openings. The mathematical statistics method was employed to investigate the displacement variation law of key point surrounding house periphery and found the forecast model. Then the forecast model was used to analyze th

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9

He, Jian, Dalin Wu, Jisheng Ma, Hongkai Wang, and Yuliang Yang. "The influence law of grouser shape on soil slide sinkage when tracked vehicle travels on soft road." Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics 234, no. 1 (2019): 225–37. http://dx.doi.org/10.1177/1464419319891324.

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The influence law of a tracked vehicle grouser shape on the soil slide sinkage was investigated in this study via the numerical simulations and physical tests. A finite element model was built using the plastic incremental theory and generalized Hokker’s law, while constitutive soil parameters were obtained via triaxial test. The numerical simulation model was verified by physical test results. Based on the verified numerical simulation model, the influence law of the tracked vehicle grouser shape on the soil slide sinkage was determined. The results show that (1) shear displacement in the lat

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10

Wang, Zai Qiang. "The Oil Accumulation Law of Putaohua Oil Layer in Taidongarea, Songliao Basin." Advanced Materials Research 868 (December 2013): 142–45. http://dx.doi.org/10.4028/www.scientific.net/amr.868.142.

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The research on Putaohua oil layer in Taidong,Songliao Basin using core,logging and seisimic information shows that oil is divided into belts from east to west influenced by faults striking from south to north and oil potential is getting poorer from east to west, oil is mainly distributed in the middle of Putaohua oil layer showing double peaks, and the main reservoir type is fault-lithology reservoir formd by NStrending faults and NW trending channel sandbody on the slope dipping to the southeast. According to the match type between fault and sandbody in single trap ,we draw the accumulation

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11

Zheng, Xiaolong, Jun Jiao, and Chenghua Li. "Study on the influence of artillery recoil on the lateral stability of patrol boat." Journal of Physics: Conference Series 2381, no. 1 (2022): 012112. http://dx.doi.org/10.1088/1742-6596/2381/1/012112.

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Abstract To solve the problem of lateral instability of a high-speed law enforcement patrol boat caused by the recoil of artillery fire, this paper adopts the method based on EFD (Experiment Fluid Dynamics), the dynamic stability of a high-speed patrol boat model under the impact of an external force is simulated by a percussive test. First, the model of the patrol boat is tested by dragging on the surface of still water, and then the percussive test is carried out with different centers of gravity height, different external impulses, and different speeds, the influence of the above factors on

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Pratima Baisakh, Lopamudra Nayak, B Shanta Kumari, and Saurjya Ranjan Das. "Morphometric Study of Dry Human Patella with Its Clinical Correlation." Indian Journal of Forensic Medicine & Toxicology 15, no. 3 (2021): 430–35. http://dx.doi.org/10.37506/ijfmt.v15i3.15343.

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Background- Patella is the largest sesamoid bone and forms the femuro-patellar component of the knee joint. Dimensions and classification of patellae are important anthropologically as well as clinically.Aims & Objectives- Morphometry of patella has a definite role in implant design and reconstructive surgeries of knee joint. The present study aims to find out different dimensions of patella and its facets on both sides and compared.Material & Methods- The morphometric study comprised of sixty (30 left and 30 right) dry human patella collected from department museum by using sliding di

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13

Kumar, Abhyuday, Saras Singh, Akhil V. Parambath, Pratik K. Singh, and Swapnil Tiwari. "Endotracheal intubation and central venous catheter placement in lateral position in an emergency traumatic injury: an improvised attempt in crisis." Research and Opinion in Anesthesia & Intensive Care 11, no. 1 (2024): 72–74. http://dx.doi.org/10.4103/roaic.roaic_34_23.

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Endotracheal intubation and central venous catheter (CVC) insertion are generally performed on the patient in the supine position. In traumatic cases, manual in-line stabilization and Sellick’s maneuver make airway management difficult. CVC insertion in the lateral position is not reported in the literature. A 30-year-old male with a history of falls from height presented with iron rods pierced into the right hand and right leg. The patient was intubated with manual in-line stabilization and Sellick’s maneuver in a lateral position. Due to the technical difficulty on the right side, CVC was in

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14

Dzhanov, Liubomyr. "Rational topology of cantilever steel beams with variable flange width and web height under deflection and strength constraints." Building constructions. Theory and Practice, no. 16 (June 28, 2025): 158–70. https://doi.org/10.32347/2522-4182.16.2025.158-170.

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The article solves the problem of selecting the optimal topology of a cantilever steel I-beam with variable web height and flange width, subject to deflection constraints and assuming an optimal distribution of steel in each cross-section based on strength conditions. The problem is solved using the method of Lagrange multipliers. The optimal design criterion is taken to be the objective function minimizing steel consumption for the structure. The condition of optimal distribution of steel between the flanges and the web based on strength criteria is adopted for each cross-section. Possible de

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Soltani, Masoumeh, Behrouz Asgarian, and Foudil Mohri. "Improved Finite Element Model for Lateral Stability Analysis of Axially Functionally Graded Nonprismatic I-beams." International Journal of Structural Stability and Dynamics 19, no. 09 (2019): 1950108. http://dx.doi.org/10.1142/s0219455419501086.

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This paper investigates the lateral buckling of simply supported nonprismatic I-beams with axially varying materials by a novel finite element formulation. The material properties of the beam are assumed to vary continuously through the axis according to the volume fraction of the constituent materials based on an exponential or a power law. The torsion governing equilibrium equation of the simply supported beam with free warping is numerically solved by employing the power series approximation. To this end, all the mechanical properties and displacement components are expanded in terms of the

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16

Wang, Jiong, Wenfei Li, Daoyong Zhu, Weili Gong, and Yi Su. "Novel Application of the Roof-Cutting-Type Gob-Side Entry Retaining in Coal Mine." Mathematical Problems in Engineering 2021 (May 23, 2021): 1–16. http://dx.doi.org/10.1155/2021/1625282.

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In this study, the roof-cutting-type gob-side entry retaining is introduced, and its application in medium-thickness coal seams is studied. Based on the analysis of the construction procedure and principle, the mechanical model of the retained roadway structure and cantilever beam formed by roof cutting was established, and the support resistance and roof deformation were obtained. In addition, through technological design analysis and numerical simulation, the parameters of roof cutting were determined. The roof-cutting height and angle were designed to be 9 m and 15°, respectively. Flac3 D w

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17

Ma, De Fu, Guang Jun Guo, Xia Yang, and Zhi Dong Zhou. "Numerical Analysis of the Bearing Behavior of Single Pile under Horizontal Load." Applied Mechanics and Materials 580-583 (July 2014): 287–90. http://dx.doi.org/10.4028/www.scientific.net/amm.580-583.287.

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Understanding the pile behavior and predicting the capacity of piles under horizontal load are important topics in foundation design. In this paper, the mechanical characteristics of single pile under horizontal load is analyzed based on FLAC3D finite difference software, and the load-displacement curve, the bending moment, shear force, soil resistance under all levels of load and the distribution law of p-y curve along the pile shaft are obtained. accordingly the following conclusions can be made: the bending moment of the upper part of pile body is big, the maximum bending moment is at the h

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18

Tuo, Wang, Qi Fuzhou, and Chang Jucai. "Analysis of Energy Transmission and Deformation Characteristics of Coal-Rock Combined Bodies." Geofluids 2022 (June 28, 2022): 1–11. http://dx.doi.org/10.1155/2022/5304250.

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A coal-rock system is a common combination form in coal mines. In order to explore the energy interchange law of a coal-rock combined body and the interaction relationship between the two bodies, loading tests of coal-rock combined bodies with different height ratios were carried out. The loading path of rock in coal-rock combined bodies was demonstrated by means of a single loading and unloading test of the same-sized rock sample. Furthermore, a method to calculate rock energy was proposed based on the area of the loading and unloading curve. The experimental results show that the greater the

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19

Cheng, Chen, Zian Wang, Zheng Gong, Pengcheng Cai, and Chengxi Zhang. "Prediction and Compensation Model of Longitudinal and Lateral Deck Motion for Automatic Landing Guidance System." Mathematics 10, no. 19 (2022): 3440. http://dx.doi.org/10.3390/math10193440.

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This paper mainly studies the longitudinal and lateral deck motion compensation technology. In order to ensure the safe landing of the carrier-based aircrafts on the flight decks of carriers during the landing process, it is necessary to introduce deck motion information into the guidance law information of the automatic landing guidance system when the aircraft is about to land so that the aircraft can track the deck motion. To compensate the influence of the height change in the ideal landing point on the landing process, the compensation effects of the deck motion compensators with differen

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20

Bhosale, Swapnil, and Popat Kumbhar. "ANALYSIS OF HIGH-RISE RCC STRUCTURE FOR INVESTIGATING OPTIMUM POSITION OF RCC OUTRIGGERS FOR DIFFERENT EARTHQUAKE ZONES AND TYPE OF SOILS." International Journal of Engineering Applied Sciences and Technology 6, no. 7 (2021): 211–18. http://dx.doi.org/10.33564/ijeast.2021.v06i07.035.

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— Rapid growth of infrastructure to accommodate modern civilization is demanding tall structures in cities. As buildings become taller the problem of their lateral stability and sway needs to be tackled by engineering judgment. Outrigger systems have been successfully applied in reducing the lateral displacement of tall buildings under wind and earthquake forces. Numerous studies have been carried out for determining optimum positions of outriggers in high rise structures; however, effect of earthquake zones and soil types on optimum position of outriggers has not been adequately studied. In t

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21

Shaikh, Sher Ali, Yaoming Li, Ma Zheng, et al. "Effect of Grouser Height on the Tractive Performance of Single Grouser Shoe under Different Soil Moisture Contents in Clay Loam Terrain." Sustainability 13, no. 3 (2021): 1156. http://dx.doi.org/10.3390/su13031156.

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The grouser height and soil conditions have a considerable influence on the tractive performance of single-track shoe. A soil bin-based research was conducted to assess the influence of grouser height on the tractive performance of single-track shoe at different moisture contents of clay loam soil. Eight moisture contents (7.5, 12, 16.7, 21.5, 26.2, 30.7, 35.8, and 38%) and three grouser heights (45, 55, and 60 mm) were comprised during this study. The tractive performance parameters of (thrust, running resistance, and traction) were determined by penetration test. A sensor-based soil bin was

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22

Hassan, Fatma Mohamed, Maged Nabil Hussein, Noran Ayman Abdel Motagally, and Walaa Samir. "Sex Predictive Value of Frontal Sinus Index Compared to Maxillary Sinus Index: Lateral Cephalometric Study." Journal of Forensic Science and Medicine 9, no. 2 (2023): 162–66. http://dx.doi.org/10.4103/jfsm.jfsm_79_22.

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Sex estimation is a crucial step to outline the biological profile of unknown human remains. The frontal and maxillary sinuses have unique anatomical features and can be utilized efficiently in individual identification. Previous studies investigated the frontal and maxillary sinus indexes separately for sex prediction. However, comparing the predictive value of the frontal sinus index (FSI) to the maxillary sinus index (MSI) has not been investigated yet. This study aimed to evaluate the sex predicting value of FSI compared to MSI assessed on digital lateral cephalometry. This retrospective c

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23

Savage, Roger W. H. "Thought and Political Judgment." Études Ricoeuriennes / Ricoeur Studies 12, no. 2 (2021): 120–37. http://dx.doi.org/10.5195/errs.2021.543.

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Hannah Arendt’s claim that thinking is the last defense against the moral outrages of criminal political regimes sets the problematic of good and evil in relief. Human freedom, Paul Ricœur reminds us, is responsible for evil. The avowal of the evil of violence is thus the condition of our consciousness of the freedom to act anew.Aesthetic experience’s lateral transposition onto the planes of ethics and politics highlights our capacity to respond to exigencies in apposite ways. Exemplary representations of the good, the right, and the justexpress a desire for being. Eros is accordingly the law

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Khan, Muhammad Imran, and Mohamed A. Meguid. "Evaluating the Role of Geofoam Properties in Reducing Lateral Loads on Retaining Walls: A Numerical Study." Sustainability 13, no. 9 (2021): 4754. http://dx.doi.org/10.3390/su13094754.

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Expanded polystyrene (EPS) geofoam is a lightweight compressible material that has been widely used in various civil engineering projects. One interesting application of EPS in geotechnical engineering is to reduce the lateral earth pressure on rigid non-yielding retaining walls. The compressible nature of the EPS geofoam allows for the shear strength of the backfill soil to be mobilized, which leads to a reduction in lateral earth pressure acting on the wall. In this study, a finite element model is developed and used to investigate the role of geofoam inclusion between a rigid retaining wall

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25

Pühringer, Gerald, and Bernhard Jakoby. "Highly Selective CMOS-Compatible Mid-Infrared Thermal Emitter/Detector Slab Design Using Optical Tamm-States." Materials 12, no. 6 (2019): 929. http://dx.doi.org/10.3390/ma12060929.

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In this work, we propose and evaluate a concept for a selective thermal emitter based on Tamm plasmons suitable for monolithic on-chip integration and fabrication by conventional complementary metal oxide semiconductor (CMOS)-compatible processes. The original design of Tamm plasmon structures features a purely one-dimensional array of layers including a Bragg mirror and a metal. The resonant field enhancement next to the metal interface corresponding to optical Tamm states leads to resonant emission at the target wavelength, which depends on the lateral dimensions of the bandgap structure. We

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Zhang, Jingyu, Mingjin Zhang, Yongle Li, and Chen Fang. "Comparison of wind characteristics at different heights of deep-cut canyon based on field measurement." Advances in Structural Engineering 23, no. 2 (2019): 219–33. http://dx.doi.org/10.1177/1369433219868074.

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The typical U-shaped deep-cut canyon is widely distributed in the western mountainous areas of China, especially in Sichuan province and Yunnan province. The deep-cut canyon has the characteristics of the high drop in elevation, high-temperature difference, and complex wind environment. A 50 m high meteorological mast with a total of eight anemometers was erected in such topography, and a long-span suspension bridge will be constructed in the area where the meteorological mast is located. Based on the long-term monitor data, the wind characteristic parameters including average and fluctuating

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GUO, Lin, Fei LIU, Jiayu LI, et al. "Path tracking control of solar-powered UAV based on energy management strategy." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 41, no. 2 (2023): 409–18. http://dx.doi.org/10.1051/jnwpu/20234120409.

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To coordinate the conflict between the high-altitude task and long-term energy efficiency of high-altitude long endurance solar UAV, it is one of the core issues of UAV control. A strategy combining the energy management with the route tracking is presented. Firstly, based on the three-dimensional particle motion model, energy storage battery model and solar energy acquisition model for the solar UAV, according to the aerodynamic parameters of the solar UAV and the typical horizontal flight, climb, descent and other motion processes of the solar UAV, the energy management strategy of the solar

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Şahin, Mehmet. "Potential Use of Subsurface Drip Irrigation Systems in Landscape Irrigation under Full and Limited Irrigation Conditions." Sustainability 15, no. 20 (2023): 15053. http://dx.doi.org/10.3390/su152015053.

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Water is an essential component of life in the world. In addition to being crucial to keeping plants alive, water is also used in various areas, such as landscape irrigation, decorative pools, and ponds. The use of water more efficiently is getting more and more important day by day because of the increasing demands of different sectors. In cities with limited water resources, such as Konya, water should be used even more efficiently to reduce irrigation water quantities and prevent water losses. The potential use of the sub-surface drip irrigation method in the irrigation of green areas in Se

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Gnann, Manuel V., and Anouk C. Wisse. "The Cox–Voinov law for traveling waves in the partial wetting regime*." Nonlinearity 35, no. 7 (2022): 3560–92. http://dx.doi.org/10.1088/1361-6544/ac6373.

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Abstract We consider the thin-film equation ∂ t h + ∂ y m ( h ) ∂ y 3 h = 0 in {h > 0} with partial-wetting boundary conditions and inhomogeneous mobility of the form m(h) = h 3 + λ 3−n h n , where h ⩾ 0 is the film height, λ > 0 is the slip length, y > 0 denotes the lateral variable, and n ∈ (0, 3) is the mobility exponent parameterizing the nonlinear slip condition. The partial-wetting regime implies the boundary condition ∂ y h = const. > 0 at the triple junction ∂{h > 0} (nonzero microscopic contact angle). Existence and uniqueness of traveling-wave solutions to this problem

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Wang, Yonghong, Xueying Liu, Mingyi Zhang, Songkui Sang, and Xiaoyu Bai. "Test and Study of Pipe Pile Penetration in Cohesive Soil Using FBG Sensing Technology." Sensors 20, no. 7 (2020): 1934. http://dx.doi.org/10.3390/s20071934.

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In order to examine the applicability of Fiber Bragg Grating (FBG) sensing technology in the static penetration of pipe piles, static penetration tests in clay were conducted using double-wall open and closed model pipe piles. The strain was measured using FBG sensors, and the plug height was measured using a cable displacement sensor. Using one open pile and two closed piles, the difference in pipe pile penetration was compared and analyzed. Based on FBG sensing technology and the strain data, the penetration characteristics of the pipe pile, such as axial force, lateral friction, and driving

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Peng, Xinshan, Lingling Qi, Zhaofeng Wang, Xiaoqing Zhou, and Chunlei Hua. "Study on Overburden Movement Deformation and Roof Breakage Law of Under-Protective Steeply Inclined Coal Seam Mining." Sustainability 14, no. 16 (2022): 10068. http://dx.doi.org/10.3390/su141610068.

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The occurrence of a steeply inclined coal seam is extraordinary, and the coal body is seriously damaged by extrusion. The most steeply inclined coal seam is a high-gas or -outburst coal seam, and protective layer mining is the safest and most effective measure for regional prevention of coal and gas outburst. Based on considering the coefficient of lateral pressure and vertical height of the section, the deflection of the basic roof of the steeply inclined protective layer in a mine in western Henan, China, was calculated using the deflection calculation method of the thin-plate theory of elas

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Shyu, Jiann-Gwo, Shih-Tsung Yu, and Yuan-Shing Perng. "A Study in Reducing Cockling of Chinese Hanging Scrolls." Sustainability 13, no. 12 (2021): 6843. http://dx.doi.org/10.3390/su13126843.

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In this study, we attempted to investigate factors affecting the cockling of Chinese hanging scrolls from several practical aspects. From the experimental results, we found that artworks become more stable if they remain attached to a drying board for more than a month. After 3 months, they are nearly completely unaffected by changes in atmospheric humidity in the display space. Trimming the mounting silk in a direction either parallel or perpendicular to the weft makes a difference in the degree of cockling. If the lateral sides and top and bottom weft are perpendicular to the artwork height,

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Ominde, Beryl Shitandi, John N. Igabari, and Joyce Ekeme Ikubor. "Morphometric Study of the Mastoid Process and its Role in Sex Differentiation: A Nigerian Computed Tomography Study." Journal of Forensic Science and Medicine 10, no. 1 (2024): 1–10. http://dx.doi.org/10.4103/jfsm.jfsm_7_23.

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Abstract Background: The mastoid process can be utilized in forensic identification due to its resistance to alterations and population variations in its morphology. The study investigated the role of mastoid parameters in the determination of sex in a Nigerian population. Aims and Objectives: The aim of this study was to determine the gender differences in measurements of the mastoid process. Furthermore, the study aimed at assessing the percentage accuracy of using the mastoid variables in sex discrimination. Materials and Methods: This cross-sectional study used computed tomographic images

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Medriosa, Hamdeni. "Evaluation of seismic capacity on the building law Faculty Tadulako University due to Palu earthquake 2018." E3S Web of Conferences 156 (2020): 05005. http://dx.doi.org/10.1051/e3sconf/202015605005.

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Indonesia is located in a high level of the earthquake risk area. According to USGS data, from December 2004 to October 2009, more than ten large earthquakes occurred and exceeded 5.0 Scale Richter in magnitude. Recently, the major earthquake occurred on September 28, 2018, in Palu City, Central Sulawesi, with 7.4 on the Scale Richter in magnitude and triggered a lot of building damaged. In this study, the seismic capacity of a 3-story reinforced concrete building, which collapsed due to a large earthquake in the city of Palu, was evaluated. The Standard for Seismic Evaluation of Existing Rein

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Deng, Zhao, Liaoni Wu, and Yancheng You. "Modeling and Design of an Aircraft-Mode Controller for a Fixed-Wing VTOL UAV." Mathematical Problems in Engineering 2021 (September 29, 2021): 1–17. http://dx.doi.org/10.1155/2021/7902134.

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Vertical takeoff and landing (VTOL) is an essential feature of unmanned aerial vehicles (UAVs). On the one hand, VTOL can expand and enhance the applications of UAVs; yet, on the other hand, it makes the design of control systems for UAVs more complicated. The most challenging demand in designing the control system is to achieve satisfactory response sharpness of fixed-wing UAVs to control commands and ensure that the aircraft mode channels are effectively decoupled. In this work, a six-degree-of-freedom (6-DoF) model with forces and moments is established based on the aerodynamic analysis, wh

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Bu, Qingwei, Min Tu, and Baojie Fu. "Research on the Redistribution Law of Lateral Mining Stress and the Bearing Characteristics of Section Coal Pillar in Extra-Thick Fully Mechanized Top-Coal Caving Mining." Shock and Vibration 2021 (September 2, 2021): 1–17. http://dx.doi.org/10.1155/2021/4355977.

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Due to the change of ground stress environment caused by underground coal mining, the intense lateral mining stress concentration is formed around the stope; so section coal pillar is generally set up to bear the mining pressure, but the different sizes of coal pillars have obvious influence on the bearing capacity of those pillars and the characteristics of mining pressure. Mastering the mechanism characteristics by which coal pillars bearing capacity and mining stress distribution is crucial to identify the reasonable coal pillar size and give full play to the bearing role of section coal pi

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Han, Fang, Cen Liu, Yang Wang, Ling-zhi Xi, and Shuai Tao. "Numerical Simulation of Curvature and Confining Pressure Effect on Progressive Failure of Surrounding Rock in Arch Tunnel with Straight Wall." Journal of Physics: Conference Series 2381, no. 1 (2022): 012024. http://dx.doi.org/10.1088/1742-6596/2381/1/012024.

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Abstract Considering the influence of tensile plastic strain of intact rock on tensile strength and elastic modulus. The influence of arch curvature and height of the straight wall on the progressive failure of surrounding rock under different confining pressures are simulated based on the Mohr-Coulomb constitutive model and the nonlinear CWFS criterion of friction strengthening and cohesion weakening. The results show that when λ 1 = 0.2, the difference between vertical load and horizontal load is large, the buckling failure of rock burst and slab cracking is obvious, and the sectional curvat

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He, Ziyong, Chao Li, Qiao He, Yang Liu, and Jiangong Chen. "Numerical Parametric Study of Countermeasures to Alleviate the Tunnel Excavation Effects on an Existing Tunnel in a Shallow-Buried Environment near a Slope." Applied Sciences 10, no. 2 (2020): 608. http://dx.doi.org/10.3390/app10020608.

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This paper studies the influence law of existing tunnels on the construction of intersecting new tunnels in a shallow slope burial context through 3D numerical analysis. The emphasis is on exploring the effect of new tunnels constructed in 54 conditions, including three ratios of overburden to tunnel height (C/H), three ratios of slope distance to tunnel span (D/W), two backfilling conditions of the existing tunnel (“hty” and “htn” conditions), and three magnitudes of surface loads (10 kPa, 20 kPa, and 30 kPa), on the deformation of lateral slopes and the overlying road. As the results show, t

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Chen, Xianchao, Hao Fan, Qin Li, et al. "Study on the deployment of differentiated well patterns for shale gas in southern Sichuan region." Subsurface Exploration and Exploitation 01 (September 29, 2024): 1–11. http://dx.doi.org/10.62813/see.2024.01.04.

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Shale gas blocks are of great geological differences in southern Sichuan, deploying differentiated well patterns accordingly is therefore significant. For two typical shale gas blocks in southern Sichuan, Dingshan normal pressure area and Yongchuan south area, a hydraulic fracturing interlayer law model based on the cohesive zone model and a fracture extension model based on rock damage theory were established. Hydraulic fracture height and length charts under different natural fracture density and operation parameters were drawn. Using these charts, fracture parameters in different areas were

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Duan, Junfeng, Yang Han, and Dongqiao Li. "The Dynamic Behavior of Silos with Grain-like Material during Earthquakes." Sustainability 15, no. 10 (2023): 7970. http://dx.doi.org/10.3390/su15107970.

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Grain security is an important guarantee for sustainable development. However, the dynamic behavior of silos containing grain-like material is not well understood. The effective mass and dynamic effects are the key parameters for the assessment of the silo–bulk material system during earthquakes. Herein, on the basis of the Janssen continuum model, it is proposed that the seismic energy is entirely dissipated by the interactions between the materials and the silo and the materials themselves. The seismic inertia forces among storage materials were introduced, and dynamic equilibrium equations

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Arranz, Patricia, Fredrik Christiansen, Maria Glarou, et al. "Body Condition and Allometry of Free-Ranging Short-Finned Pilot Whales in the North Atlantic." Sustainability 14, no. 22 (2022): 14787. http://dx.doi.org/10.3390/su142214787.

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To understand the effects of anthropogenic disturbance on the nutritional health of animals, it is important to measure and understand the morphometrics, allometrics, and body condition of the species. We examined the body shape, allometric relationships, and body condition of short-finned pilot whales (Globicephala macrorhynchus) in three locations across the North Atlantic. Using unmanned aerial vehicles, the body length (BL) and width (along the body axis) were measured from photographs of the dorsal side, while body height (dorso-ventral distance) was measured on the lateral side. Seventy-

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Nasr-Azadani, M. M., and E. Meiburg. "Turbidity currents interacting with three-dimensional seafloor topography." Journal of Fluid Mechanics 745 (March 21, 2014): 409–43. http://dx.doi.org/10.1017/jfm.2014.47.

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AbstractDirect numerical simulations are employed to investigate the interactions of bidisperse turbidity currents with three-dimensional seafloor topography in the form of Gaussian bumps. Results for two different bump heights are compared against currents propagating over a flat surface. The bump heights are chosen such that the current largely flows over the smaller bump, while it primarily flows around the taller bump. Furthermore, the effects of the settling velocity are investigated by comparing turbidity currents with corresponding compositional gravity currents. The influence of the bo

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Mao, Hui, Guang-chong Qin, and Tao Lan. "Study on the Seismic Performance of Box-Plate Steel Structure Modular Unit." Advances in Materials Science and Engineering 2019 (May 2, 2019): 1–16. http://dx.doi.org/10.1155/2019/4561631.

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To study the seismic performance of the box-plate steel structure system, two three-storey single box-plate steel structure space stress-bearing unit test pieces have been designed and fabricated according to the 1 : 3 reduced scale. In addition, the quasi-static loading test has been performed on the test pieces where the destruction process, destroy mode, bearing capacity, hysteretic behavior, etc., have been studied and the impact of reinforcing measures with a corner or not on the seismic performance of test pieces has been mainly analyzed. The test results show that the destruction of the

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Wang, Kaifeng, Mengjie Liu, Jie Cao, Jiayong Niu, and Yunxia Zhuang. "Bearing Characteristics of Composite Foundation Reinforced by Geosynthetic-Encased Stone Column: Field Tests and Numerical Analyses." Sustainability 15, no. 7 (2023): 5965. http://dx.doi.org/10.3390/su15075965.

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In order to study the bearing characteristic of the geosynthetic-encased stone column (GESC) on the composite foundation, a series of field tests and numerical simulation were carried out on the composite foundations reinforced by the traditional stone column and the GESC. The pile–soil stress ratio, excess pore water pressure and lateral displacement of two kinds of composite foundations were monitored. The effects of geotextile stiffness, geotextile wrapping length and gravel internal friction angle on the composite foundation with the GESC were analyzed by establishing different numerical m

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GRIMM, TH, and T. MAXWORTHY. "Buoyancy-driven mean flow in a long channel with a hydraulically constrained exit condition." Journal of Fluid Mechanics 398 (November 10, 1999): 155–80. http://dx.doi.org/10.1017/s0022112099006163.

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Convection plays a major role in a variety of natural hydrodynamic systems. Those in which convection drives exchange flows through a lateral contraction and/or over a sill form a special class with typical examples being the Red and Mediterranean Seas, the Persian Gulf, and the fjords that indent many coastlines. The present work focuses on the spatial distribution and scaling of the density difference between the inflowing and outflowing fluid layers. Using a long water-filled channel, fitted with buoyancy sources at its upper surface, experiments were conducted to investigate the influence

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Kang, Bowen, Jiaquan Wang, Yuanwu Zhou, and Shibin Huang. "Study on Bearing Capacity and Failure Mode of Multi-Layer-Encased Geosynthetic-Encased Stone Column under Dynamic and Static Loading." Sustainability 15, no. 6 (2023): 5205. http://dx.doi.org/10.3390/su15065205.

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The “method of overlap” replaces traditional welding to solve the problem of how the geosynthetic-encased stone column is limited by the welding frame during site construction, making the site construction simplified and economical, but its bearing mechanism is not clear. Therefore, the bearing mechanism and failure mode of the stone column was studied through the compression test of the multi-layer geosynthetic-encased stone column under dynamic and static loading. The research shows that the multi-layer encasement improves the modulus and lateral restraint of the stone column, which increase

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Liu, Di, Zeyu Li, Caiwu Lu, et al. "Experimental study on multi-scale migration characteristics of capillary water in tailings." Thermal Science, no. 00 (2023): 260. http://dx.doi.org/10.2298/tsci230715260l.

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The increase of water content in tailings is the key cause of various diseases. In order to study the microscopical mechanism of tailings capillary water transport, an online monitoring capillary water rise test system was developed by itself, which mainly includes distortionless high-definition digital microscope, three-dimensional mobile microscopic observation frame, CAMERA/VIEW PLAY CAP wireless acquisition system and computer. The system is used to carry out the dynamic real-time observation experiment of the capillary water rising process of tailings, analyze the movement trajectory and

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Onen, Fevzi. "GEP PREDICTION OF SCOUR AROUND A SIDE WEIR IN CURVED CHANNEL." JOURNAL OF ENVIRONMENTAL ENGINEERING AND LANDSCAPE MANAGEMENT 22, no. 3 (2014): 161–70. http://dx.doi.org/10.3846/16486897.2013.865632.

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Side-weirs have been widely used in hydraulic and environmental engineering applications. Side-weir is known as a lateral intake structure, which are significant parts of the distribution channel in irrigation, land drainage, and urban sewerage system, by flow diversion device. Local scour involves the removal of material around piers, abutments, side-weir, spurs, and embankments. Clearwater scour depth based on five dimensional parameters: approach flow velocity (V1/Vc), water head ratio (h1–p)/h1, side-weir length (L/r), side-weir crest height (b/p) and angle of bend θ. The aim of this study

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Zhao, Chen, Bi, and Cui. "Experimental Investigation on Hydrodynamic Coefficients of a Column-Stabilized Fish Cage in Waves." Journal of Marine Science and Engineering 7, no. 11 (2019): 418. http://dx.doi.org/10.3390/jmse7110418.

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This study on hydrodynamic coefficients of a column-stabilized fish cage under wave action plays an important role in the anti-wave design of cages. The regular wave test was used to study the horizontal wave force of the jacket and column-stabilized fish cage under different wave heights, periods, and incident angles; the finite element model of the jacket and the column-stabilized fish cage was established according to the test model. On the basis of the calculation of the finite element model, combined with the wave force obtained from the experiment, the hydrodynamic coefficients of the st

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Liu, Changxi, Jun Hu, Yufei Li, et al. "Numerical Simulation of the Trajectory of UAVs Electrostatic Droplets Based on VOF-UDF Electro-Hydraulic Coupling and High-Speed Camera Technology." Agronomy 13, no. 2 (2023): 512. http://dx.doi.org/10.3390/agronomy13020512.

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The electrostatic spray technology can significantly improve the utilization rate of liquid medicine under the operation characteristics of unmanned aerial vehicles (UAVs) with small load and low spray volume. To explore the settlement law of electrostatic droplets, further improve the amount of droplets deposited in target crops, and reduce the loss of missing target, this study adopted the method of combining numerical simulation and high-speed photography to study the movement characteristics of electrostatic droplets of UAV induction conical electrostatic nozzle. Based on the droplet spati

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